Initial commit

08-numbers-and-strings/02-strings/02-concatenation/03-concat-non-strings/main.go

@@ -0,0 +1,51 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import (
+	"fmt"
+	"strconv"
+)
+
+func main() {
+	fmt.Println(
+		"hello" + ", " + "how" + " " + "are" + " " + "today?",
+	)
+
+	// you can combine raw string and string literals
+	fmt.Println(
+		`hello` + `, ` + `how` + ` ` + `are` + ` ` + "today?",
+	)
+
+	// ------------------------------------------
+	// Converting non-string values into string
+	// ------------------------------------------
+
+	eq := "1 + 2 = "
+	sum := 1 + 2
+
+	// invalid op
+	// string concat op can only be used with strings
+	// fmt.Println(eq + sum)
+
+	// you need to convert it using strconv.Itoa
+	// Itoa = Integer to ASCII
+
+	fmt.Println(eq + strconv.Itoa(sum))
+
+	//
+
+	// invalid op
+	// eq = true + " " + false
+
+	eq = strconv.FormatBool(true) +
+		" " +
+		strconv.FormatBool(false)
+
+	fmt.Println(eq)
+}